Hiroyuki OHSAKI


Contact Duration-Aware Epidemic Broadcasting in Delay/Disruption-Tolerant Networks
Kohei WATABE Hiroyuki OHSAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/12/01
Vol. E98-B  No. 12  pp. 2389-2399
Type of Manuscript:  PAPER
Category: Network
Keyword: 
delay/disruption-tolerant networksopportunistic networksepidemic broadcastingcontact duration distributionmobile ad-hoc network
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Analysis of Blacklist Update Frequency for Countering Malware Attacks on Websites
Takeshi YAGI Junichi MURAYAMA Takeo HARIU Sho TSUGAWA Hiroyuki OHSAKI Masayuki MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/01/01
Vol. E97-B  No. 1  pp. 76-86
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
malwarewebsiteblacklistmonitoringstate transitionanalysis
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Evaluations and Analysis of Malware Prevention Methods on Websites
Takeshi YAGI Junichi MURAYAMA Takeo HARIU Hiroyuki OHSAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/12/01
Vol. E96-B  No. 12  pp. 3091-3100
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
securitywebhoneypotmalwareanti-virusblacklistaccess filtering
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Stepping-Random Code: A Rateless Erasure Code for Short-Length Messages
Zan-Kai CHONG Bok-Min GOI Hiroyuki OHSAKI Bryan Cheng-Kuan NG Hong-Tat EWE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/07/01
Vol. E96-B  No. 7  pp. 1764-1771
Type of Manuscript:  Special Section PAPER (Special Section on Internet Architectures, Protocols, and Management Methods that Enable Sustainable Development)
Category: 
Keyword: 
rateless erasure codeshort-length messages
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Lightweight and Distributed Connectivity-Based Clustering Derived from Schelling's Model
Sho TSUGAWA Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/08/01
Vol. E95-B  No. 8  pp. 2549-2557
Type of Manuscript:  Special Section PAPER (Special Section on Networking Technologies for Cloud Services)
Category: 
Keyword: 
Schelling's modelconnectivity-based clusteringdistributed clusteringdynamic network
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Performance of Thorup's Shortest Path Algorithm for Large-Scale Network Simulation
Yusuke SAKUMOTO Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/05/01
Vol. E95-B  No. 5  pp. 1592-1601
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
SSSP (single-source shortest path problem)large-scale network simulationDijkstra's algorithmThorup's algorithm
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Improving Robustness of XCP (eXplicit Control Protocol) for Dynamic Traffic
Yusuke SAKUMOTO Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/11/01
Vol. E93-B  No. 11  pp. 3013-3022
Type of Manuscript:  PAPER
Category: Network
Keyword: 
XCP (eXplicit Control Protocol)traffic dynamicsrobustnessstabilitycongestion control
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Stability Analysis of XCP (eXplicit Control Protocol) with Heterogeneous Flows
Yusuke SAKUMOTO Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/10/01
Vol. E92-B  No. 10  pp. 3174-3182
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
XCP (eXplicit control protocol)stabilityheterogeneous flowscontrol theoryfluid-flow approximation
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Estimating Node Characteristics from Topological Structure of Social Networks
Kouhei SUGIYAMA Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/10/01
Vol. E92-B  No. 10  pp. 3094-3101
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
complex networksocial networklink miningSSI (Structural Superiority Index)prospect theory
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Delay Performance Analysis on Ad-Hoc Delay Tolerant Broadcast Network Applied to Vehicle-to-Vehicle Communication
Satoshi HASEGAWA Yusuke SAKUMOTO Mirai WAKABAYASHI Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 728-736
Type of Manuscript:  Special Section PAPER (Special Section on Ad Hoc and Mesh Networking for Next Generation Access Systems)
Category: 
Keyword: 
ad hoc networkdelay tolerant networkvehicular network
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GridFTP-APT: Automatic Parallelism Tuning Mechanism for GridFTP in Long-Fat Networks
Takeshi ITO Hiroyuki OHSAKI Makoto IMASE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/12/01
Vol. E91-B  No. 12  pp. 3925-3936
Type of Manuscript:  PAPER
Category: Network
Keyword: 
automatic parallelism tuningGolden Section Search methodGrid computingGridFTPGridFTP-APTparallel TCP connectionsparameter tuning
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Analysis of a Window-Based Flow Control Mechanism Based on TCP Vegas in Heterogeneous Network Environment
Keiichi TAKAGAKI Hiroyuki OHSAKI Masayuki MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/01/01
Vol. E85-B  No. 1  pp. 89-97
Type of Manuscript:  Special Section PAPER (Special Issue on Internet Technology II -- Traffic Control and Performance Evaluation in the Internet)
Category: 
Keyword: 
TCP Vegascontrol theoryfairnessstabilitytransient performance
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Steady State Analysis of the RED Gateway: Stability, Transient Behavior, and Parameter Setting
Hiroyuki OHSAKI Masayuki MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/01/01
Vol. E85-B  No. 1  pp. 107-115
Type of Manuscript:  Special Section PAPER (Special Issue on Internet Technology II -- Traffic Control and Performance Evaluation in the Internet)
Category: 
Keyword: 
RED (random early detection) gatewayTCPstabilitytransient behaviorparameter settingcontrol theory
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Performance Improvement of TCP over EFCI-Based ABR Service Class by Tuning of Congestion Control Parameters
Go HASEGAWA Hiroyuki OHSAKI Masayuki MURATA Hideo MIYAHARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/10/25
Vol. E80-B  No. 10  pp. 1444-1453
Type of Manuscript:  Special Section PAPER (Special Issue on Network Interworking)
Category: Communication protocol
Keyword: 
ABR (available bit rate) serviceTCP (transimssion control protocol)rate-based congestion controlparameter tuning
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Performance Evaluation and Parameter Tuning of TCP over ABR Service in ATM Networks
Go HASEGAWA Hiroyuki OHSAKI Masayuki MURATA Hideo MIYAHARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/05/25
Vol. E79-B  No. 5  pp. 668-683
Type of Manuscript:  Special Section PAPER (Special Issue on High Speed Local Area Network)
Category: 
Keyword: 
rate-based congestion controlABR (Available Bit Rate) serviceUBR (Unspecified Bit Rate) serviceEPD (Early Packet Discarding)TCP (Transmission Control Protocol)simulation
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Design Algorithm for Virtual Path Based ATM Networks
Byung Han RYU Hiroyuki OHSAKI Masayuki MURATA Hideo MIYAHAEA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/02/25
Vol. E79-B  No. 2  pp. 97-107
Type of Manuscript:  PAPER
Category: Communication Networks and Services
Keyword: 
virtual path (VP)equivalent bandwidthvirtual path exchange (VPX)virtual channel exchange (VCX)heuristic algorithm.
 Summary | Full Text:PDF(1.1MB)